Due to the
2011 Tōhoku earthquake and tsunami,
Jewels 12th Ring was canceled. As a result of this, Jewels decided to change their planned schedule in order to combine
Jewels 13th Ring and
Jewels 14th Ring into a single date and location, the first one in the afternoon and the second one in the evening, and serve as fundraisers for Japan's earthquake relief and reconstruction efforts. The location and date originally planned for
Jewels 14th Ring will be used for
Jewels 15th Ring. a collaborative effort from several Japanese
combat sports organizations. The first four bouts announced were two
kickboxing matches and two MMA matches on . In a notable development,
Yasuko Mogi, producer of MMA promotion
Valkyrie, was present during the press conference to announce that the MMA bouts would be part of the theme
Jewels vs Valkyrie, where fighters representing their respective promotions would face each other. On , Jewels added
Mika Nagano vs. Emi Murata to the
14th Ring card and announced three more bouts for the
13th Ring card. Four more matches were announced on , two MMA bouts for
13th Ring and two
grappling bouts for
14th Ring. On , Jewels added one
shoot boxing match and one more grappling match to
14th Ring. ==Results==